291 689 Exponent Status

Great Internet Mersenne Prime Search
GIMPS
Finding World Record Primes Since 1996

PrimeNet Exponent Status

M_n

Status

Details

Factored

Factor	Digits	Bits	Date
92757103	8	26.5	old
641304973009750545740947502383	30	99.0	2020-06-27 12:39:37

ECM

Digits	B1	Curves
25	50000	280 / 280
30	250000	459 / 640

Estimated T-Level: 28.6 ⓘ

TF below 2^90 is very unlikely to find new factors due to ECM effort.

Status	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified (Factored)	2017-09-22	Oliver Kruse	BC0BA281CC9C063A	1	0	1	3
Verified (Factored)	2017-10-12	Oliver Kruse	BC0BA281CC9C063A	1	95217	1	3
Verified (Factored)	2017-11-06	kkmrkkblmbrbk	BC0BA281CC9C063A	1	107262	1	3
Verified (Factored)	2020-04-17	Oliver Kruse	E79608774BDED883	1	130860	5	3
Verified	2020-06-27	M Miller	E79608774BDED883	2	268965	5	3

History

Date	User	Type	Result
2023-03-20	Naegi Makoto	NF-PM1	B1=2000000, B2=69052933950
2022-02-06	Lisander Viaene	NF-PM1	B1=50000
2020-06-27	M Miller	C-PRP	M291689/92757103/641304973009750545740947502383 : E79608774BDED883 PRP: Verified PRP without proof (small exponent)
2020-06-27	_p95holder_	F-ECM	Factor: 641304973009750545740947502383 / (ECM curve 1, B1=250000, B2=25000000)
2020-04-17	Oliver Kruse	C-PRP	M291689/92757103 : E79608774BDED883 PRP: Verified PRP without proof (small exponent)
2017-11-06	kkmrkkblmbrbk	C-PRP	M291689/92757103 : BC0BA281CC9C063A PRP: Verified PRP without proof (small exponent)
2017-10-12	Oliver Kruse	C-PRP	M291689/92757103 : BC0BA281CC9C063A PRP: Verified PRP without proof (small exponent)
2017-09-22	Oliver Kruse	C-PRP	M291689/92757103 : BC0BA281CC9C063A PRP: Verified PRP without proof (not generated)
2017-09-22	Oliver Kruse	C-PRP	M291689/92757103 : BC0BA281CC9C063A PRP without proof (not generated)